I want to install pillow on my Mac. I have python 2.7
and python 3.4
, both installed with Homebrew. I tried brew install pillow
and it worked fine, but only for python 2.7
. I haven't been able to find a way to install it for python 3
. I tried brew install pillow3
but no luck. I've found a post on SO that says to first install pip3
with Homebrew and then use pip3 install pillow
. As it happens, I have already installed pip3
.
I've never understood the difference, if any, between installing a python package with pip
and installing it with Homebrew. Can you explain it to me? Also, is it preferable to install with Homebrew if a formula is available? If installing with Homebrew is indeed preferable, do you know how to install pillow
for python 3
with Homebrew?
The first answers indicate that I haven't made myself plain. If I had installed pillow with pip install pillow
instead of brew install pillow
would the installation on my system be any different? Why would Homebrew make a formula that does something that pip
already does? Would it check for additional prerequisites or something? Why is there a formula for pillow with python2
, but not as far as I can tell for pillow
with python3
?
well, packages for OSX may include packages for python.
pip
is a packager for the python world - you should only ever be able to install python-things with it; homebrew
is a package manager targetted at OSX; it doesn't impose any restrictions onto what software you can install with it - since python is a subset of software.
installing things with brew
will install them into /usr/local/
;
installing things with pip
will fetch packages from the Python Package Index, and it will install them in a place where your python interpreter will find them: either into your home directory (e.g. ~/.local/lib/python2.7/site-packages/
) or in some global search-path of your python interpreter (e.g. /usr/local/lib/python2.7/dist-packages/
)
if you have installed the python
interpreter via brew
, then chances are high that any python-package installed via brew
will be usable out of the box.